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Proceedings Paper

Relationship between large-aperture optical components of striated surface shape and focal spot characteristics in the far-field
Author(s): Zemin Lei; Xiaoyan Sun; Xianhua Yin; Fengnian Lv; Zhen Zhang; Xingqiang Lu; Dianyuan Fan
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Paper Abstract

Surface shape of optical components is an essential factor of the laser beam quality. Different types of surface correspond to different characteristics of the laser focal spot. Striated surface shape is one of common and typical cases of optical component surfaces in laser facilities, which have attracted great attention. For learning the impact of the component on focal spot in the far-field, a model component with the similar features was introduced in the study. Intensity distributions of focal spot in the far-field was simulated after laser beam went through the model component. Effects of the modulation depth and the modulation period on spot morphology were presented. Furthermore, the relations between these optical specifications and focal spots with some requirements had been analyzed. The results can enhance our understanding about striae degrees of optical elements and have reference values to guide the processing and the use of large-aperture components correctly.

Paper Details

Date Published: 14 July 2015
PDF: 14 pages
Proc. SPIE 9532, Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers, 95321M (14 July 2015); doi: 10.1117/12.2185524
Show Author Affiliations
Zemin Lei, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Xiaoyan Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Xianhua Yin, Shanghai Institute of Optics and Fine Mechanics (China)
Fengnian Lv, Shanghai Institute of Optics and Fine Mechanics (China)
Zhen Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Xingqiang Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Dianyuan Fan, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 9532:
Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph; Meiping Zhu, Editor(s)

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